2 files changed, 5 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index 3bc621bd86..8c68fc07b7 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,6 +3,9 @@ Tue Mar  4 19:10:43 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
 	* hash.c (rb_hash_aset): should not copy key string when
 	  compare_by_identity is set.  [ruby-dev:33604]
 
+	* hash.c (hash_equal): two hash tables are different when internal
+	  comparison table differ.  [ruby-dev:33989]
+
 Tue Mar  4 16:29:06 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* parse.y (parser_yylex): disallow non digits '0o' expression.
diff --git a/hash.c b/hash.c
index 3b74b8c20b..2cb7270304 100644
--- a/hash.c
+++ b/hash.c
@@ -1397,6 +1397,8 @@ hash_equal(VALUE hash1, VALUE hash2, int eql)
 	return Qfalse;
     if (!RHASH(hash1)->ntbl || !RHASH(hash2)->ntbl)
         return Qtrue;
+    if (RHASH(hash1)->ntbl->type != RHASH(hash2)->ntbl->type)
+	return Qfalse;
 #if 0
     if (!(rb_equal(RHASH(hash1)->ifnone, RHASH(hash2)->ifnone) &&
 	  FL_TEST(hash1, HASH_PROC_DEFAULT) == FL_TEST(hash2, HASH_PROC_DEFAULT)))